Interesting, the wikipedia right before your quote says that the "journey" "comes from the French journée (day)," as you say, charging for a day of work. But the next paragraph says:
> In parts of Europe, as in Late Medieval Germany, spending time as a wandering journeyman (Wandergeselle),[6] moving from one town to another to gain experience of different workshops, was an important part of the training of an aspirant master.
So I guess at least in some times/places journeymen also did actually journey? Whether wandering or not, I'd think the right to charge a fee for each day's work is also the right to leave at the end of the day if you'd like, having gotten paid. Unlike an apprentice who is tied to his master and does not get paid for a day's work, if he leaves he's out of work entirely.
You are misreading it. The semantics that someone goes from place to place is captured in the word "wandering", and is not repeated in "journeyman", which still refers to charging for a day of work.
The title "journeyman" refers to the right to charge a fee for each day's work. :
https://en.m.wikipedia.org/wiki/Journeyman#Origin